Scottish Maritime Museum, Montgomery Street, Irvine

The Scottish Maritime Museum, located on Montgomery Street in Irvine, is a single-storey engineering works built in 1872 by James Spencer and re-erected in 1990-91. The building features twin tall central bays that span 16.15 meters, with lean-to side aisles that have a span of 6.10 meters. Inside, original cast-iron stanchions and timber roof trusses divide the space into 12 bays, with riveted wrought-iron crane rails at the upper level and wooden crane rails at the lower level. The walls are made of replacement common brick, and the roof is sarked and slated, featuring strip-glazed roof lights on both the main roof and the side aisles. The east end of the building is gabled and has no openings, while the west end of the roofs is piended.

On the west elevation, the central bays have depressed arch entrances, with doorways flanked by giant-order pilasters. There are larger entrances to the left, with three small windows above and long windows at two levels on the flanking bays. To the right, there is an entrance with a pair of tall windows above a smaller doorway, and the flanking bays are symmetrical with the left side, featuring a pilastered sandstone doorcase to the right.

The lean-to aisles are two bays wide, with pilasters flanking the windows, and the aisle to the right is set back. There is a doorway between the aisle and the main frontage, with multiple glazing above and to the east side. The side elevations have pilaster ends and tall multi-pane windows, with three short louvred ventilators at each roof ridge.